M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội PHOTOSYNTHESIS AND RESPIRATION Glossaries: Photosynthesis: quang hợp Light intensity: cường độ ánh sáng Respiration: hô hấp Inhibit: ức chế Chloroplast: lục lạp Optimum: tối ưu Chlorophyll: chất diệp lục Inhale: hít vào Rate: tốc độ Exhale: thở I Photosynthesis Definition All living things needs food to survive What is the food of a plant? How plants get food when they cannot move? Every food chain begins with a plant Plants capture energy from light, and transfer some of the energy into food that they make Photosynthesis is the way that plants make food, using energy from light In this process, they also make a very important gas – oxygen This process also requires water and carbon dioxide - plants use water in photosynthesis They get the water from the soil CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THƠNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội - plants use carbon dioxide in photosynthesis They get the carbon dioxide from the air Most leaves are green This is because they contain a green pigment call chlorophyll (A pigment is a colored substance.) Chlorophyll captures energy from light The leaf can then use this energy to make food Factors affecting photosynthesis Activity: Use the simulation on gizmo, change the values of intensity/temperature then read the volume of oxygen produced After that complete the table below: Light intensity (%) 10 30 40 50 60 70 10 20 30 40 50 60 Volume of oxygen (mL) Temperature (oC) Volume of oxygen (mL) Conclusion: The rate of photosynthesis can be affected by: - Light intensity (distance from the lamp and the plant): the higher intensity of light, the faster rate of photosynthesis (or the larger amount of oxygen produced) But excessive light inhibits photosynthesis - Temperature: The rate of photosynthesis increases with increase in temperatures till the optimum level for that plant Beyond the optimum levels on both sides of the normal range, the photosynthesis process stops CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THƠNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội II Respiration Air component Air is a mixture of gases include nitrogen (78%), oxygen (10 – 21%) and the other gases (1%) Respiration Respiration is the process that all living things go through to create the energy they need to live This happens in the cells so it is also called cellular respiration It is usually involves exchanging two gases – oxygen and carbon dioxide The cells take in oxygen, the oxygen combines with molecules of glucose and release carbon dioxide Human respiratory system The organs that help to get oxygen from the air into your blood, and to get rid of carbon dioxide, make up the respiratory system Aerobic respiration is the release of energy from glucose by reacting it with oxygen inside living cells *Why the breathing rate increases during exercise? When you exercise and your muscles work harder, you body use more oxygen and produces more carbon dioxide To cope with this extra demand, your breathing in crease to get more oxygen *Why we feel difficulty in breathing on high mountains? CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THÔNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội The amount of oxygen decreases dramatically as you climb a mountain Decreased amount of oxygen means that less oxygen is available for breathing With so much less oxygen, your body has to breathe more to get the same amount of the essential molecules *Compare inhaled and exhaled air CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THÔNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội III PRACTICE Ex1: A group of 20 students were stuck in a small storeroom without windows for hours a In the table below, fill in the blanks with “increases”, “decreases” or “remains the same” b After being stuck in the room for hours, An’s breathing rate increased Based on the table above, explain why An’s breathing rate increased ……………………………………………………………………………………………… ……………………………………………………………………………………………… Ex2: Ha wanted to find out how the distance between the lamp and the water plant affects the number of bubbles produced by the plant She switched on the lamp and set its brightness at 100 units She counted the number of bubbles produced per minute for the distances, X a Complete the table below which shows the number of bubbles produced per minute with different distances X ……………………………………………………………………………………………… ……………………………………………………………………………………………… b What can she conclude on the relationship between the number of bubbles produced per minute and the distance X? ……………………………………………………………………………………………… ……………………………………………………………………………………………… CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THƠNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) M: 0913 22 00 66 E: Athensvn.edu@gmail.com A: Trung Yên 10, Trung Hòa, Cầu Giấy, Hà Nội Ex3: Based on your knowledge about photosynthesis and respiration, give the suitable explanation for the picture below: CHƯƠNG TRÌNH ĐÀO TẠO PHỔ THƠNG CẤP 1-2-3 CÁC NGÀY TRONG TUẦN ➢ Khoa học (tích hợp chương trình Lý-Hóa-Sinh tiếng Anh, tiếng Việt) ➢ Tốn (tích hợp chương trình tiếng Việt, tiếng Anh) ➢ Tiếng Anh (học bổng ASEAN/ASTAR, luyện thi chứng Cambridge) ... Trung Hòa, Cầu Giấy, Hà Nội II Respiration Air component Air is a mixture of gases include nitrogen (78%), oxygen (10 – 21%) and the other gases (1%) Respiration Respiration is the process that... Conclusion: The rate of photosynthesis can be affected by: - Light intensity (distance from the lamp and the plant): the higher intensity of light, the faster rate of photosynthesis (or the larger... also called cellular respiration It is usually involves exchanging two gases – oxygen and carbon dioxide The cells take in oxygen, the oxygen combines with molecules of glucose and release carbon